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Author SHA1 Message Date
Eli Friedman
080efb8cea Add a helper to remove a branch and DCE the condition, and use it 
consistently for deleting branches.  In addition to being slightly 
more readable, this makes SimplifyCFG a bit better 
about cleaning up after itself when it makes conditions unused.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61100 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 20:54:32 +00:00
Dan Gohman
00dc84a2ca Eliminate the loop that walks the critical path. Instead, just track the 
position in the critical path during the main instruction walk.  This
eliminates the need for the CritialAntiDep DenseMap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:27:52 +00:00
Bill Wendling
43445c153c Remove empty test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61095 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:07:17 +00:00
Bill Wendling
6fa311c233 Temporarily revert r61019, r61030, and r61040. These were breaking LLVM Release 
builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61094 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:06:48 +00:00
Dan Gohman
905ff1ebc4 Preserve SourceValue information when lowering produces multiple loads from 
different offsets within the same stack slot.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61093 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 18:25:36 +00:00
Evan Cheng
09dc9c0c83 We have decided not to support inline asm where an output operand with a matching input operand with incompatible type (i.e. either one is a floating point and the other is an integer or the sizes of the types differ). SelectionDAGBuild will catch these and exit with an error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 18:21:39 +00:00
Oscar Fuentes
8069f28a5d CMake: Added DbgInfoPrinter.cpp to lib/Analysis/CMakeFiles.txt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61087 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 12:25:04 +00:00
Torok Edwin
367cdff0c2 add testcase for -print-dbginfo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61086 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 10:10:23 +00:00
Torok Edwin
6e68106a47 Add -print-dbginfo pass that prints LLVM IR with comments inserted to show 
which source/line a certain BB/instruction comes from, original variable names,
and original (unmangled) C++ name of functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61085 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 09:09:19 +00:00
Torok Edwin
620f28095b Add utility functions to search for DbgStopPointInst corresponding to an 
instruction or BasicBlock, and to search for DbgDeclareInst corresponding to a
variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61084 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 09:07:36 +00:00
Torok Edwin
a70c68efc8 use different name for parameter to make it clear that we set DIDescriptor::GV 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61083 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 09:06:01 +00:00
Nick Lewycky
1447f5ca1f Generalize support for analyzing loops to include SLE/SGE loop exit conditions 
and support for non-unit strides with signed exit conditions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 08:30:01 +00:00
Chris Lattner
5a6bb6ae78 switch some std::set/std::map to SmallPtrSet/DenseMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61081 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 07:34:30 +00:00
Chris Lattner
f478951b0e fix PR3217: fully cached queries need to be verified against the 
visited set before they are used.  If used, their blocks need to be
added to the visited set so that subsequent queries don't use conflicting
pointer values in the cache result blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61080 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 07:10:09 +00:00
Dan Gohman
812d7506d0 Enable anti-dependence breaking by default when post-RA scheduling is enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 06:21:45 +00:00
Dan Gohman
fde221fa0a When breaking an anti-dependency, don't use a register which has seen 
one of its aliases defined. This is conservative, but tricky subreg
corner cases are outside the primary aim of this pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61077 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 06:20:58 +00:00
Dan Gohman
8749b61178 Add initial support for back-scheduling address computations, 
especially in the case of addresses computed from loop induction
variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:35:01 +00:00
Dan Gohman
9a65d6afc2 Remove some special-case logic in ScheduleDAGSDNodes's 
latency computation code that is no longer needed with the
new method for handling latencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61074 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:31:11 +00:00
Dan Gohman
3f23744df4 Fix some register-alias-related bugs in the post-RA scheduler liveness 
computation code. Also, avoid adding output-depenency edges when both
defs are dead, which frequently happens with EFLAGS defs.

Compute Depth and Height lazily, and always in terms of edge latency
values. For the schedulers that don't care about latency, edge latencies
are set to 1.

Eliminate Cycle and CycleBound, and LatencyPriorityQueue's Latencies array.
These are all subsumed by the Depth and Height fields.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61073 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:25:46 +00:00
Misha Brukman
64722e5163 * Comply with HTML 4.01 Strict 
* Added code-region markings to code sections to make them stand out
* Added pre.doc_code class to llvm.css to simplify marking code regions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61072 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:07:49 +00:00
Misha Brukman
96e0081251 * Comply with HTML 4.01 Strict standard 
* Converted absolute links to llvm.org/docs to relative links
* Fixed spelling and s/;/:/, as needed


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61071 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 02:54:22 +00:00
Dan Gohman
4ea8e85e19 Add a simple target-independent heuristic to allow targets with no 
instruction itinerary data to back-schedule loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61070 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 02:38:22 +00:00
Dan Gohman
c6b680eee5 Move addPred and removePred out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61067 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 01:05:52 +00:00
Dan Gohman
ffa391272b Make addPred and removePred return void, since the return value is not 
currently used by anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61066 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 01:00:55 +00:00
Dan Gohman
3ee7449f39 This getEdgeAttributes doesn't need a template argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61065 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:55:00 +00:00
Dan Gohman
c3df7a8884 Add a getSDep() access function to SUnitIterator to return the 
current SDep.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61064 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:51:33 +00:00
Dan Gohman
e7c1c660ad Reorder some SDep methods. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61063 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:48:53 +00:00
Dan Gohman
537add3492 SDep's operator== should compare the Latency field too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:47:19 +00:00
Bill Wendling
fc953d149f Change so that buildit won't need a parent directory with only the build scripts in them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61061 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:42:25 +00:00
Chris Lattner
657084a8ea add testcase for r61051 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61052 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:46:23 +00:00
Chris Lattner
101f44e81f enhance heap-sra to apply to fixed sized array allocations, not just 
variable sized array allocations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61051 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:44:34 +00:00
Mon P Wang
93b3b928d7 Added support for splitting and scalarizing vector shifts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61050 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:44:00 +00:00
Chris Lattner
344b41cfbd Use stripPointerCasts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61047 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:20:32 +00:00
Chris Lattner
49b6d4ae9e minor tweaks for formatting, allow bitcast in ValueIsOnlyUsedLocallyOrStoredToOneGlobal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61046 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:08:54 +00:00
Chris Lattner
e61d0a626e refactor some code into a new TryToOptimizeStoreOfMallocToGlobal function. 
Use GetElementPtrInst::hasAllZeroIndices where possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61045 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:02:25 +00:00
Chris Lattner
ca17422158 add a basic test for heap-sra 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61041 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 19:42:05 +00:00
Chris Lattner
1314f20283 Teach basicaa to use the nocapture attribute when possible. When the 
intrinsics are properly marked nocapture, the fixme should be addressed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61040 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 18:59:22 +00:00
Dan Gohman
464fc5a044 Fix printing of PseudoSourceValues in SDNode graphs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61036 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 17:28:10 +00:00
Dan Gohman
2b00aebda9 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 17:26:50 +00:00
Chris Lattner
582048d5b8 add some more notes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61033 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 08:32:28 +00:00
Chris Lattner
8f416f3afd Add a testcase for GCC PR 23455, which lpre handles now. Add some 
comments about why we're not getting other cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61032 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 07:49:24 +00:00
Nick Lewycky
fd7eb7252f Update generated files after nocapture syntax change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61031 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 07:31:07 +00:00
Nick Lewycky
382da62ec2 It turns out that "align 1" and unaligned are different. Add a bias to the 
alignment attribute such that 0 means unaligned.

This will probably require a rebuild of llvm-gcc because of the change to
Attributes.h. If you see many test failures on "make check", please rebuild
your llvm-gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61030 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 07:29:55 +00:00
Mon P Wang
d17c030276 Added support to LegalizeType for expanding the operands of scalar to vector 
and insert vector element.  Modified extract vector element to extend the
result to match the expected promoted type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61029 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 06:57:02 +00:00
Chris Lattner
ef423ebdd1 gvn now hoists this load out of the hot non-call path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61028 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 06:34:48 +00:00
Chris Lattner
2ba3b62149 Enable Load PRE. This teaches GVN to push partially redundant loads up the 
CFG when there is exactly one predecessor where the load is not available.
This is designed to not increase code size but still eliminate partially
redundant loads.  This fires 1765 times on 403.gcc even though it doesn't
do critical edge splitting yet (the most common reason for it to fail).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61027 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 05:28:29 +00:00
Chris Lattner
3af23f8aba if we have a phi translation failure of the start block, 
return *just* a clobber of the start block, not other 
random stuff as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61026 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 04:58:29 +00:00
Chris Lattner
4807e07fff Adjust testcase to make it more stable across visitation order changes, 
unbreaking it after r61024.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61025 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 04:42:00 +00:00
Owen Anderson
c34d112362 Ifdef out some code that I didn't mean to enable by default yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61024 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 03:52:17 +00:00
Chris Lattner
f33131685b make GVN try to rename inputs to the resultant replaced values, which 
cleans up the generated code a bit.  This should have the added benefit of
not randomly renaming functions/globals like my previous patch did. :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61023 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 03:46:38 +00:00